When I buy an iPhone and use iOS, I’m making an active choice to be an Apple user. When I install a third-party app and use it, I’m making an active choice to be their user too. When that third-party app embeds the Facebook SDK which tracks me, I don’t know about it and do not have the ability to consent to Facebook tracking me. ATT brings Facebook to the same level as Apple and the third-party app developers by givi…
If you need to know the details of what is done inside the third-party app, then that third-party is not trustworthy. Or you also need to know what is done inside iOS.
The problem is that in today world, we don't know who we can trust, and that the context might change over time. We all believe that Apple doesn't do shady stuff today, but has anyone proof? and will that change some day?